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Machine Learning Engineer II (Underwriting ML)

Affirm

Remote · Canada$11,083–15,250 gross/mofull-timeAffirm Careers

On the Underwriting ML team, you’ll build and improve machine learning systems that make real-time transaction decisions, assessing the repayment risk and expected value of every Affirm checkout. You’ll work closely with experienced ML engineers, platform partners, and cross-functional stakeholders to take models from idea to prototype to production, and to keep them healthy with strong measurement and monitoring as user behavior and macroeconomic conditions evolve.

Responsibilities

  • You will develop and iterate on underwriting prediction models using a mix of approaches for tabular and sequential data
  • You will build and scale feature pipelines and training datasets from proprietary and third-party signals, partnering with data and platform teams when needed.
  • You will prototype new modeling ideas and features, run offline experiments, and drive the best-performing approaches into production with appropriate risk controls.
  • You will help productionize models: integrate into batch and/or real-time decision systems, and improve reliability, latency, and operational robustness.
  • You will instrument and monitor model and data health, and help define retraining/backtesting workflows
  • You will collaborate across Engineering, Risk Analytics, Product, and ML Platform to define requirements, evaluate tradeoffs, and communicate results clearly to both technical and non-technical audiences.
  • What we look for
  • You have a total of 2+ years of experience as a machine learning engineer or a PhD in a relevant field.
  • Strong Python skills and experience writing production-quality code.
  • Experience building and evaluating models for classification problems (preferably gradient-boosted decision trees like LightGBM/XGBoost/CatBoost, or similar).

Languages

    Work format
    Remote
    Seniority
    Mid
    Posted
    6 Aug 2026
    Last verified
    In the last 5 days

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